diff options
| -rw-r--r-- | usr/src/boot/sys/boot/efi/libefi/efipart.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/usr/src/boot/sys/boot/efi/libefi/efipart.c b/usr/src/boot/sys/boot/efi/libefi/efipart.c index 347c14f68a..2640201698 100644 --- a/usr/src/boot/sys/boot/efi/libefi/efipart.c +++ b/usr/src/boot/sys/boot/efi/libefi/efipart.c @@ -239,6 +239,16 @@ efipart_hdd(EFI_DEVICE_PATH *dp) !blkio->Media->MediaPresent) { return (false); } + + /* + * We assume the block size 512 or greater power of 2. + * iPXE is known to insert stub BLOCK IO device with + * BlockSize 1. + */ + if (blkio->Media->BlockSize < 512 || + !powerof2(blkio->Media->BlockSize)) { + return (false); + } } return (true); } |